<script setup>
import {
    Edit,
    Delete
} from '@element-plus/icons-vue'
import { ref } from 'vue'
const categorys = ref([
    {
        "id": 3,
        "categoryName": "美食",
        "categoryAlias": "my",
        "createTime": "2023-09-02 12:06:59",
        "updateTime": "2023-09-02 12:06:59"
    },
    {
        "id": 4,
        "categoryName": "娱乐",
        "categoryAlias": "yl",
        "createTime": "2023-09-02 12:08:16",
        "updateTime": "2023-09-02 12:08:16"
    },
    {
        "id": 5,
        "categoryName": "军事",
        "categoryAlias": "js",
        "createTime": "2023-09-02 12:08:33",
        "updateTime": "2023-09-02 12:08:33"
    }
])

//声明一个异步函数，因为调用接口需要等待页面加载完成
import { articleCategoryListService, ArticleCategoryAddService,ArticleCategoryUpdateService,ArticleCategoryDeleteService } from "@/api/article.js";
const articleCategoryList = async() => {
    let result = await articleCategoryListService();
    categorys.value = result.data;
}
articleCategoryList();

//控制添加分类弹窗是否显示，默认不显示
const dialogVisible = ref(false)

//添加分类数据模型
const categoryModel = ref({
    categoryName: '',
    categoryAlias: ''
})
//添加分类表单校验
const rules = {
    categoryName: [
        { required: true, message: '请输入分类名称', trigger: 'blur' },// trigger: 'blur':当输入框失焦时触发
    ],
    categoryAlias: [
        { required: true, message: '请输入分类别名', trigger: 'blur' },
    ]
}

//调用接口添加分类  表单
import { ElMessage, ElMessageBox } from 'element-plus';
const addCategory = async() => {
    //调用接口
    let result = await ArticleCategoryAddService(categoryModel.value);
    ElMessage.success(result.message ? result.message : '添加成功！')

    //调用获取所有文章分类的函数
    articleCategoryList();
    dialogVisible.value = false;
}

//定义变量，控制编辑和新增分类时的弹窗
const title = ref('');
//展示编辑分类
const showDialog = (row) => {
    dialogVisible.value = true;title.value = '编辑分类'
    //数据拷贝
    categoryModel.value.categoryName = row.categoryName;
    categoryModel.value.categoryAlias = row.categoryAlias;
    //扩展 id 属性，将来传递给后台进行分类信息改写
    categoryModel.value.id = row.id;
}

//编辑分类的接口调用函数
const updateCategory = async() => {
    //调用接口
    let result = await ArticleCategoryUpdateService(categoryModel.value);
    ElMessage.success(result.message  ? result.message : '修改成功')
    //调用获取所有文章分类的函数
    articleCategoryList();
    dialogVisible.value = false;
}

//清空category模型中的数据
const removeCategoryModel = () => {
    categoryModel.value.categoryAlias = '';
    categoryModel.value.categoryName = '';
}

//删除分类
const deleteCategory = (row) => {
    //确认框
    ElMessageBox.confirm(
    '确定要删除吗？',
    '一旦删除将无法回复！',
    {
      confirmButtonText: '确认',
      cancelButtonText: '取消',
      type: 'warning',
    }
  )
    .then(async() => {
        //调用接口,Vue 3的响应式系统会在底层自动处理属性的读取和更新,无需.value
         let result = await ArticleCategoryDeleteService(row.id);
      ElMessage({
        type: 'success',
        message: '删除分类成功！',
      })
      //刷新列表
      articleCategoryList();
    })
    .catch(() => {
      ElMessage({
        type: 'info',
        message: '取消删除！',
      })
    })
}
</script>
<template>
    <el-card class="page-container">
        <template #header>
            <div class="header">
                <span>文章分类</span>
                <div class="extra">
                    <el-button type="primary" @click = "dialogVisible = true;title = '添加分类';removeCategoryModel()">添加分类</el-button>
                </div>
            </div>
        </template>
        <el-table :data="categorys" style="width: 100%">
            //这里如果写 type=“index” row的id跟数据库id对不上,必须写 prop = “id”
            <el-table-column label="序号" width="100" type="index"> </el-table-column>
            <el-table-column label="分类名称" prop="categoryName"></el-table-column>
            <el-table-column label="分类别名" prop="categoryAlias"></el-table-column>
            <el-table-column label="操作" width="100">
                <template #default="{ row }">
                    <!-- 在模板中使用 ref 时，Vue编译器会自动处理 .value 的访问, 所以不要加.value -->
                    <el-button :icon="Edit" circle plain type="primary" @click = showDialog(row)></el-button>
                    <el-button :icon="Delete" circle plain type="danger" @click = deleteCategory(row)></el-button>
                </template>
            </el-table-column>
            <template #empty>
                <el-empty description="没有数据" />
            </template>
        </el-table>
        <!-- 添加分类弹窗 -->
        <el-dialog v-model="dialogVisible" :title="title" width="30%">
    <el-form :model="categoryModel" :rules="rules" label-width="100px" style="padding-right: 30px">
        <el-form-item label="分类名称" prop="categoryName">
            <el-input v-model="categoryModel.categoryName" minlength="1" maxlength="10"></el-input>
        </el-form-item>
        <el-form-item label="分类别名" prop="categoryAlias">
            <el-input v-model="categoryModel.categoryAlias" minlength="1" maxlength="15"></el-input>
        </el-form-item>
    </el-form>
    <template #footer>
        <span class="dialog-footer">
            <el-button @click="dialogVisible = false">取消</el-button>
            <el-button type="primary" @click="title == '添加分类' ? addCategory() : updateCategory()"> 确认 </el-button>
        </span>
    </template>
</el-dialog>
    </el-card>
</template>

<style lang="scss" scoped>
.page-container {
    min-height: 100%;
    box-sizing: border-box;

    .header {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
}
</style>